Enhancing the pictorial content of digital holograms at 100 frames per second

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dc.contributorVirginia Techen
dc.contributor.authorTsang, Peter Wai Mingen
dc.contributor.authorPoon, Ting-Chungen
dc.contributor.authorCheung, K. W. K.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessed2014-02-06en
dc.date.accessioned2014-03-14T15:08:15Zen
dc.date.available2014-03-14T15:08:15Zen
dc.date.issued2012-06-01en
dc.description.abstractWe report a low complexity, non-iterative method for enhancing the sharpness, brightness, and contrast of the pictorial content that is recorded in a digital hologram, without the need of re-generating the latter from the original object scene. In our proposed method, the hologram is first back-projected to a 2-D virtual diffraction plane (VDP) which is located at close proximity to the original object points. Next the field distribution on the VDP, which shares similar optical properties as the object scene, is enhanced. Subsequently, the processed VDP is expanded into a full hologram. We demonstrate two types of enhancement: a modified histogram equalization to improve the brightness and contrast, and localized high-boost-filtering (LHBF) to increase the sharpness. Experiment results have demonstrated that our proposed method is capable of enhancing a 2048x2048 hologram at a rate of around 100 frames per second. To the best of our knowledge, this is the first time real-time image enhancement is considered in the context of digital holography. (C) 2012 Optical Society of Americaen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationP.W.M. Tsang, T.-C Poon, and K.W.K. Cheung, "Enhancing the pictorial content of digital holograms at 100 frames per second," Opt. Express 20, 14183-14188 (2012); 10.1364/OE.20.014183en
dc.identifier.doihttps://doi.org/10.1364/OE.20.014183en
dc.identifier.issn1094-4087en
dc.identifier.urihttp://hdl.handle.net/10919/25928en
dc.identifier.urlhttp://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-13-14183en
dc.language.isoenen
dc.publisherOptical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectReconstructionen
dc.titleEnhancing the pictorial content of digital holograms at 100 frames per seconden
dc.title.serialOptics Expressen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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